Process for the manufacture of agglomerates.



he I

ALPHONSE EXBRAYAT, or PARIS,- FRANCE.

No Drawing.

To all whom it ma concern Be it known that I, Arier io'nsn EX BRAYAT of16Rue Trtaigne, ParisflRe'public" of France, have invented "a Processfor the Manufacture of Agglomerates; of'whi'ch the following isa full,olear, and exact"descrip tion.

process for the lnanufa'ctureof agglomerates or blocks of anthracite,cokeflignite, coal, charcoal, ores and so forth which produce no smellor smoke and whichfresist moisture.

In order to agglomeratecdztl dust, pitch a is generally utilized, but itpresents the defect of liberating a thick and dirty-smoke.

In order to avoid this smoke, the expedient has been adopted ofdistillingtheniixture of pitch and coal in missed vesselinforder toeliminate the carbureted' h drogen but this method presents theinconvenience of being costly of furnishing a "product presenting theappearance of coke, and of which the calorific value is considerablyless than that of thecoal and pitch from which it Was produced.

It has also been proposed to replace the pitch by feculent compoundssuch as dextrin, starch, flour and so forth or by the residual productsof paper mills and sugar factories, but these methods are costly and thebinders of this class are soluble in water, and the agglomerates areattackable by moisture.

The process forming the object of the present invention overcomes thedefects enumerated above.

This method is broadly characterized by the employment as agglomerant ofan insoluble soap which oxidizes and hardens in the atmosphere; it isobtained from marine plants or other vegetables containing fucine orgelose and cellulose, which plants are treated with hot water orsteamand mixed with soda or caustic lime or with hydraulic lime.

Preferably an appropriate quantity of flour is added to the marineplants. A small quantity of a resinous product may also be added to themixture to insure the preservation of the agglomerate and an oxidizingagent may also be added to consume the smoke arising from the resinousproduct or from the coal. I

The agglomerant is preferably obtained in employing marine plants suchas varecs or fucus (which are varieties of kelp) owing to iSpecification tr Letters latent.

The present invention hasfor'its objecta r tem a Sept. as, 19 15.

the largequantity-of gelose that they "con:

tain. These plants "are torn into fragments andr'educed'to powder bymeans of apparatus employed in shredding or pulverizin'g' vegetablesand-they are then treated with hot water' or steam in suitableproportions. Sod um hydroxid is added to these marine plants and thewholeis stirred in a mixing I a and kneading machine until completelydis solved in such a manner as to obtain a paste offsuitableconsistency. The quantity of. sodium hydroxid employed will vary between0.50-and 1% in accordance with the nature of the marine plants.

In order to insure the keeping of the paste, a*smallquantity 1-'(1/5thto l/lOth of the weightof the vegetable substances in ac cordancewiththeir nature) of pitch, coal taror other resinous products isadded. tothe paste and also 1% of an oxidizing agent such as perchlorate ofpotash,- peroxid of manganese, nitrate of soda, perborate of soda inorder to consume the smoke coming from the resinous products or from thecoal. The paste thus constituted is mixed with the coal dust in the sameproportions as pitch that is to say 8 to 10% of paste and the Whole isthen subjected to the action of a press and dried by air or in afurnace. When dried the agglomerate is passed through a bath of varecsolution obtained by dissolving the plant in hot water in which ordinarysoap is dissolved in the proportion of 10 grams per liter of water. Thissolution forms a protecting coat which is rendered insoluble bysubsequently passing the agglomerate through a bath of aluminum sulfate.

The agglomerate thus obtained does not liberate odor or smoke andresists the action of water and moisture.

The quantity of vegetable matter employed may be reduced in replacing aportion of it by cereal or gramineous flours. In this case caustic limeand silicates of alumina and lime may also be added to the product ontothe kneaded mass.

mass is molded and then dried by suitable through which steam circulatesat the proper temperature for bringing the mixture under treatmenttoatemperature varying between 60 and 80 7 V In order to produceeflicient agglomeration, hot Water is caused to drop gradually Aftermixing, this ventilation and by heat. The product thus obtained presentsall the favorable qualities of pitch agglomerates Without presentingtheir. defects, that is to say it opposes great resistance to Waterand'moisture and liberatesneither smell nor smoke. V The soap Withmarine plant base described above can also be utllized for forming intobriquets the dust of ores intende or gelose and an alkali, mixing,Vmolding Copies of this patent may be obtained for into blocks, anddrying the same, passing the blocks through a bath containing sea Weedsdissolved in soap solution, and again drying.

3. A process of agglomerating ore, coal and the like, Which comprisesadding the same to a liquid containing dissolved fucine or gelose and analkali, mixing, molding into blocks, and'drying the same, passing theblocks through a bath containing sea Weeds dissolved in soap solution,again drying, and thereafter passing the blocks through a bath of analuminum salt, to pre cipitate an insoluble aluminum soap as aWaterproofing agent.

L A process of agglomerating ores, coal and the like, Which comprisesmixing the same With a solution containing caustic soda,

a tarry material, an oxidizing agent, and dissolved sea Weed.

The foregoing specification of my process for the manufacture ofagglomerates signed by me this twelfth day of June, 1914.

Paris, France. V

ALPHONSE EXBRAYAT.

Witnesses:

V CHAS. P. PRESSLY,

REM: THIRIQT.

five cents each, by addressing the Commissioner of Patents, Washington,D. 0'.

